Hydraulic valve.



J. J. SIMMONDS. HYDRAULIC VALVE.

APPLICATION FILED JAH. 13, 1913,

Patented July 14,191.4

3 SHEETS-SHEET 2.

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J. J. sIMMoNDs. l HYDRAULIC VALVE.

APPLICATION IILBD JAN. 13, 1913.

3 SHEETS-SHEET 3.

1,103,320. Patented July 14,1914

MM 0.62%4. Smmana Maxam@ A TTU/MEV JOHN J'. SIMMONDS, 0F IOLA, KANSAS.

HYDRAULIC VALVE.

' To all whom it may concern:

Be it known that I, JOHN J. SIMMoNns, a citizen of the United States, residing at Iola, in the cpunty of Allen andA State of Kansas, have invented certain new and useful Improvements in Hydraulic Valves; and I do declare the following to be a full, clear,

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use t-he same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to valves, and more particularly to a valve for 4controlling How to a hydraulic press, or the like, the principal use for which the valve is contemplated being in connection with a press for forming lire clay retorts commonly used in zinc or likevore smelters.

While the press, or other mechanism with lwhich the valve is used, is not claimed as a part of the'piesent invention, I have illustrated a well known form of retort press in order to better explain and illustrate the construct-ion and operation of my improved valve, and will describeI whatever parts of the press it is necessary to mention in connection with the description of the valve.

In the operation vof a press of the character shown, that is, a press comprising a ram for forming a retort chamber and a ring for packing the sides of the retort and wherein the ram is operated by a large plunger and theringby a pair of small plungers, it is the practice to feed water under pressure to the plunger chambers so that the small plungers are operated in unison and independently of the large plunger.

It is also an object of the invention to provide a valve wherein fiow is automatically admitted to the ram plunger chamber when a cert-ain predetermined pressure is on the ring plungers, in order that the ram may be supported independently of the ring plungers to enable the parts to equalize.

It is also an object of the invention to provide a valve through which communication is afforded between the ram plunger chamber and a supply tank during the initial travel of the ram and. ring plungers, and whereby the relatively idle travel of the ram will serve to draw water from the tank into Specication of Iietters Patent.

Application led January 13, 1913. Serial No. 741,804.

, acter.

Patented July 14, 1914.

its chamber, to fill the vacuum created in the chamber by. the lifting ofl the plunger and thereby save pumping that amount of water.

It is also an object of the invention to provide a valve whereby the'plunger chambersl may be drained quickly in order to release the ram and ring (plungers when the formed retort is complete In accomplishing these and other objects of the invention, Which will be mentioned in the followingv description, Ihave provided the improved details of structure hereinafter described and illustrated in the accompanying drawings, wherein:-

Figure I is a side elevation of a valve constructed according to my invention. Fig. II is a central vertical section o-f same. Fig. III is a plan View of same. Fig. I V isan end view of same. Fig. Vis a section on the line V-V, Fig. I, showing the divided conduit around the drain valve. Fig. VI is a central vertical section-of either of the check valves showing the edge channels for obviating vacuum in the guide chambers. Fig. VII is an elevation of the valve and its operating mechanism', shown in lcombination with a retort press of ordinary construction, part of the press lbeing in section. Fig. VIII is a central vertical sect-ion of the press.

Referring more in detail to the parts, and lirst to the press o'r machine with which the valve isused in order that the construc- 'tionand operation-of the valve may be better understood, 1 designates the mold chamber Figs. VII and VIII) Within which the retorts are formed, and 2 the caps for exposing the upper portion of the mold, the cap levers and locking devices being such as are ordinarily used in machines of this char- 3 designates the ram which is connected with a. plunger 4 that extends into a chamber 5 which is fed by a pipe 6 that leads to the valve, and through whichv water under pressure is delivered in order to operate the ram.

7 designates a ring which surrounds the ram and is adapted for packing the soft fire clay in the mold and pushing the retort from the press and is operated by a slotted sleeve 8 that is mounted on a cross head 9 which is operably connected with thev plungers 10 that extend into t-he cylinders 11, the c vlinders 11 being smaller than the ram chamram is lifted therewith, although the sleeve may be lowered away from the ram when llie latteris held by pressure in the chamer 5. i

The valve comprises a casing having a bore 16 fed by a pipe 17 which leads to a pump (not shown) which may be connected with a supply tank (also not shown). In the bore 16 are valve seats 18 and 19, and slidably mounted in glands 20 and 21, and

' adapted to seat inthe valve seats 18 and 19 respectively, are plunger valves 22 and 23.

20 and 21 and are connected with the lever 24 at opposite sides of a fulcrum 25, so that they are worked oppositely to each other,

one being closed when the other is opened.v

The lever 24 is preferably connectedby a rod 26 with a quadrant 27 located above an operating ioor F, of the type usually found in smelters, .around the retort press.

The ,channel 16 continues through the valve seat 19 and through the channel 28 of a check valve 29 which is adapted for preventing back flow to the pump, and preferably comprises a head 30 adapted to seat on the valve seat 31 .and having a stem 32 projected into a pocket 33 in a plug 34 that is screwed into the valve casingythe stem 32 having a channel 35 and cross channel 36, through which iuid may pass to the pocket 33 to obviate vacuum in the pocket which might interfere with the proper operation of the valve.

The feed channel has branches 38 leading from the valve channel 28 to the supply pipes 12 which lead to the small plunger chambers of the press which-control the operation of the forming ring. The channels 38 extend around a drain valve, presently described, and lead to the channel 39 of the spring-checked valve 40 which is adapted to seat on a seat 41 to cutl off flow throughy the feed conduit to the ram chamber. The spring check, by which the valve 40 is controlled, preferably comprises a toggle 42, one link 43 of which is pivotally mounted on a rod 44 carried by a frame 45, and the 5, so that when the predetermined pressure has been reached on the ring plungers,the ram channel is automatically opened and Water forced into all of the chambers under the same pressure, it being apparent, however, that as the chamber 5 is of greater area than chambers 11 that greater preure vwill 1 be exerted n the `ram plunger than on the l Aring plungers.

The valves 22 and' 23 extend from the glands construction as the check valve 29, hereto- A check valve 56, preferably of the same fore described, is located in the valve channel 53 and adapted to seat on a seat 57 communieating with a channel l58 which leads back to a supply tank (not shown) througha pipe 59 Iso that when the ram plunger is lifted by the ring plungers and the vacuum is created in the ram plunger chamber the vacuum causes the check Valve to lift so that water may be drawn froml the tank into .the ram plun er chamber to ll' the vacuum and there y save pumping that amount of water, which yis a large gain of time in each opera# tion of the press and thus saves the use of a low pressure accumulator.

When the retort has'been formed and it is desired to drain the chambers, avalve 60 is operated, so thatits hea-d 61 is lifted from its seat 62 to establish 'communication between the feed channel in the valve and a drain -channel 63 leading to the pipe 59 that connects With the supply tank. 1n order to drain the chambers quickly 1 provide. an ejector 64 the discharge from which is connected with'the tank and pressure supplied from the pump through the seat 18 controlled by the plunger valve '22, when the valve is opened and its oppositely.y operable valve 23 is closed to close the valve channel. The drainage or release valve may be operated by a rod 66A which also extends v through the floor F so that it, as wellas the other control -members, may be operated conveniently.

In using the valve, presuming the parts to be constructed and assembled as described,

and, for the sake of illustration, connected with a press for making retorts, when the press is ready for use the drainageor releasing valve 6,0 is closed and the valve lever 24 is rocked to seat `the plunger valve and unseat the valve 23, so that fluid pumped into the valve willtravel through the channel 16, past the valve seat 19 and moaao into the channel 28, where it lifts' the check valve 30, and through theby-pass channels 38 to the pipes 12 ythrough which it is delivered to the ring plunger chambers, the flow of yfluid through the channel 39 being cut off' by the spring check plunger valve 40. When the ring'plungers are raised by the hydraulic pressure they .also lift the ram 3 through the connection made by key 13 so that the ram and plungers rise together to form the retort chamber and pack the material. When the material has become packed tore'sist a predetermined pressure (usually 1000 lbs.) the spring check controlling the plunger valve 40 is overcome by the pressure against the-valve 40 so that theI valve is lifted and the check toggle reversed, so that the plunger'valve 40 is heldin open position. The Huid then Hows through channels 89 and 52 around the check valve 56 and throu h the pipe 6 into the ram plunger cham er, so' that the ram is controlled by hydraulic pressure independently of the ring plungers. .It .is apparent that when the ram plunger is raised 'by the ring plungers the vacuum created' in the ramp'lunger chamber would interfere with the proper lifting of the plungers unless means were provided for admitting iuid to fill the vacuum in the z chamber, such means in the present instance comprising 1 a connection through the pipe 6, the check valve 56, convduit and pipe 59 to the tank (not shown) from which the fluid Jfor operating the press is drawn, it being` apparent that when the vacuum in theram plunger chamber is suiiner until the retort is formed, when .the

cient to overcome the check valve 56 thevalve will be lifted and water drawn from the tank into the plungenchamber to relieve the vacuumv and save pumping that amount of water which is a great saving of Huid is turned ol the press by rocking the valve lever 24to seat. the plunger valvev 23v -and lift the valve 22, .so that vthe pump, .which operates continuously, will forcewater through the idle 'channel leading from the valve seat .18 to the tank pipe 59, and inl order to quickly reverse the ram and ring j plungers I p rovide the ejector ,64 which is reduced in size enough to create suilicient v"pressure ondelivering the Water from the4 '1. idle passage into the tank pipe, so that the l' contents of the plunger chambers is drawn out of the chambers to hasten their relief, both the ram and ring lunger chamber be,-

ing drained through t e channel `63 wheng. 4the drainage or release valve 61 is operated .to establish communication between the ram and ring plunger conduits after'the plunger valves-22 and yT23vl have been reversed.' In ,order to obviate possibles, back leakage during the manipulation of the valves, or at any other time, I provide a check valve 30 in the channel 28 between the plunger supply pipes and the plunger valve 23,*so lthat should pressure in the press .exceed that in the pump the uid cannot be driven back from the press to the pump.

Having thus described my invention, what I claim las new therein and desire to secure by yLetters-Patent, is

1. The combination with a valve casing, of conduits leading from the casing, means for supplying fluid under pressure to the casing, meansfor drainin the casing and conduits and valve mechanism for diverting the iuid supply from theconduits to the drain and whereby fluid is drawn back from the conduits, substantially as set forth.

2. The combination with a valve casing, of

the casing, conduits for conducting said iuid g from the casing, a drain communicating with said conduits andl with the supply means and comprising an ejector, and valve mechanism lwhereby said fluid is diverted from the conduits to the drain through said ejector, for the purpose. set forth.

3. The combination with a valve casing having a channel extending therethrough, of means for delivering fluid under pressure to said channel, means for conducting fluid from the casing, a drain, a valve controlling communication betweenv the casing channel and drain, and an ejector having valve communication with the Huid delivery means and Aadapted for drawingiluid from the casing channel and delivering same to the drain.

4. The combination with a vaflve casing having a channel extending therethrough, of means for delivering fluid under pressure to said channel, primary and secondary conduits opening independentl from said channel and adapted for different uty, means for priming lthe lsecondary conduit during the action of the primary conduit, a valve operable from the pressure of the primary .conduit for establishing a flow of Huid through the secondarycondult, a manually operable drain valve for draining the prlmary and secondary conduits and an e'ector operable from said casingl channel or 'accelerating the flow of liquid through said drain valve.`

101sl Y v,5. The `combination with a valve c sing i having a channel extending therethrou h, of means for delivering Huid yunder pressure to said channel, primary andy secondary conduits opening independentl. from said channel and adapted ,for di erent duty, a

a manually o era ledrain valve 'for drainf* ing said I'con uits and an ejector operating,y

fromI said casin Vchannel 'for accelerating valve ,operablel from the pressure ofthe; mary conduit for equalizing the pvressureb'e-l tween the primar and secondary conduits,"

6. The combination with a set of hydraulic cylinders, of a-pump and a valve for delivering fluid under pressure thereto, having a main channel and separate conduits leading 'therefrom toeach of said hydraulic cylinders, means for delivering Huid under pressure to one of said cylinders until it has reached its limit and accumulates pressure in the conduit, an automatic valve operable 10 from such accumulated pressure for -establishing a flow of Huid to other of said hydraulic cylinders,4 a manually operable drain valve for draining said cylinders and conduits and an ejector operable from the .pump for accelerating the HOW of fluid through said drain-Valve.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN J. SIMMONDS.

Witnesses:

BURTON E. CLIFFORD, T. G. HEATH. 

